CA1315529C - Process for production of varistor material - Google Patents

Process for production of varistor material

Info

Publication number
CA1315529C
CA1315529C CA000602947A CA602947A CA1315529C CA 1315529 C CA1315529 C CA 1315529C CA 000602947 A CA000602947 A CA 000602947A CA 602947 A CA602947 A CA 602947A CA 1315529 C CA1315529 C CA 1315529C
Authority
CA
Canada
Prior art keywords
zinc oxide
varistor
manganese compound
sintering
present
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA000602947A
Other languages
English (en)
French (fr)
Inventor
Hideo Ochi
Nakagawa Zenbee
Akihide Igari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Somar Corp
Original Assignee
Somar Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Somar Corp filed Critical Somar Corp
Application granted granted Critical
Publication of CA1315529C publication Critical patent/CA1315529C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors; Arresters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/105—Varistor cores
    • H01C7/108—Metal oxide
    • H01C7/112—ZnO type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/30—Apparatus or processes specially adapted for manufacturing resistors adapted for baking

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermistors And Varistors (AREA)
  • Compositions Of Oxide Ceramics (AREA)
CA000602947A 1988-06-15 1989-06-15 Process for production of varistor material Expired - Fee Related CA1315529C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP147307/88 1988-06-15
JP63147307A JPH068211B2 (ja) 1988-06-15 1988-06-15 バリスタ材料の製法

Publications (1)

Publication Number Publication Date
CA1315529C true CA1315529C (en) 1993-04-06

Family

ID=15427237

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000602947A Expired - Fee Related CA1315529C (en) 1988-06-15 1989-06-15 Process for production of varistor material

Country Status (6)

Country Link
US (1) US5076979A (de)
EP (1) EP0346895B1 (de)
JP (1) JPH068211B2 (de)
KR (1) KR910001814A (de)
CA (1) CA1315529C (de)
DE (1) DE68915208T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0812814B2 (ja) * 1989-07-20 1996-02-07 ソマール株式会社 バリスタ材料及びその製造方法
JPH0685363B2 (ja) * 1991-09-30 1994-10-26 ソマール株式会社 高電圧用バリスタ及びその製造方法
JP2623188B2 (ja) * 1992-01-29 1997-06-25 ソマール株式会社 バリスタ及びその製造方法
JP3622774B2 (ja) * 1994-04-18 2005-02-23 株式会社村田製作所 電圧非直線抵抗体の製造方法
SE530587C2 (sv) * 2006-10-31 2008-07-15 Abb Research Ltd Elektriskt fältstyrande material

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5128439B2 (de) * 1971-08-27 1976-08-19
US4094061A (en) * 1975-11-12 1978-06-13 Westinghouse Electric Corp. Method of producing homogeneous sintered ZnO non-linear resistors
JPS6028121B2 (ja) * 1980-06-17 1985-07-03 松下電器産業株式会社 電圧非直線抵抗器の製造方法
JPS62162308A (ja) * 1986-01-13 1987-07-18 松下電器産業株式会社 電圧非直線抵抗体の製造方法
US5039452A (en) * 1986-10-16 1991-08-13 Raychem Corporation Metal oxide varistors, precursor powder compositions and methods for preparing same
DE68910621T2 (de) * 1988-08-10 1994-05-19 Ngk Insulators Ltd Nichtlineare spannungsabhängige Widerstände.

Also Published As

Publication number Publication date
EP0346895A3 (en) 1990-02-21
EP0346895B1 (de) 1994-05-11
US5076979A (en) 1991-12-31
JPH068211B2 (ja) 1994-02-02
DE68915208D1 (de) 1994-06-16
JPH01317158A (ja) 1989-12-21
KR910001814A (ko) 1991-01-31
DE68915208T2 (de) 1994-09-22
EP0346895A2 (de) 1989-12-20

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Legal Events

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